Παραπομπή APA

Heyel, C. (1972). Handbook of modern office management and administrative services. New York: McGraw-Hill.

Παραπομπή Chicago Style

Heyel, Carl. Handbook of Modern Office Management and Administrative Services. New York: McGraw-Hill, 1972.

Παραπομπή MLA

Heyel, Carl. Handbook of Modern Office Management and Administrative Services. New York: McGraw-Hill, 1972.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.